Trivial change to equation collapses range to single point

[liavkoren]

Hi, I've literally just started using guesstimate, maybe I'm just confused about what's happening:

I have a cell with =3*(exp(log(APY/100)/(3*365)) - 1), which shows a range (4.6* 10^-3 to 0.016). Updating that equation to =3*(exp(log(APY/100)/(3*365)) - 1) + 1 collapses to range to 1. This is the model, I've added a few more nodes.

Sorry to bother if this is a mistake on my part or something.